Buying ETH will be good for you as the prices for ETH have been so low right now. But what pinches me out here is your holding strategy. Actually altcoins dont have big market so they dont come out of the dip once gone down. So holding would be of not much profit as you would be getting higher margins of profit if you hold bitcoins. So review your decision and see if this can happen.
Not just ETH, the prices of most of the coins and tokens in the market right now have gotten so cheap and in fact, I am even targeting very good projects from ICOs right now as they are just getting beat hugely by the downtrend in the market and going below the ICO prices. However, it is always a good thing to hold and buy more now, because whether we like it or not, the market will still recover, even not now, later on and those who are buying and holding now, will not definitely regret it.
I've heard of people investing their entire life savings at the top. I definitely don't think that was a wise and logical decision. We were in total euphoria due to the price climax.
Some people risk all their saving into cryptos as they do believe cryptos are the future. I am not finding any wrong in their decisions even veteran people always suggest to risk only what we can afford to lose and cryptos are still in experimental phase.